The outer whorl of leaf-like structures (sepals) at the base of a flower; also sometimes called a calyx.
From Latin calyx, from Greek kalyx (cup, husk), referring to the cup-like shape of the outer flower parts; sometimes spelled calyx in modern English.
The calix protects the flower bud before it blooms—like nature's own gift wrap—and in many fruits like apples, you can still see the dried calix at the bottom.
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